Electrochemistry questions
1808 published questions with worked solutions.
- The equilibrium constant for the reaction Zn(s) + Sn^ 2+ (aq) Zn^ 2+ (aq) + Sn(s) is 1 10^ 20 at 298 K. The magnitude of standard...
- The standard electrode potential (M^ 3+ /M^ 2+ ) for V, Cr, Mn & Co are –0.26 V, –0.41 V, +1.57 V and +1.97 V, respectively. The...
- The electrode potential of the following half cell at 298 K X|X^ 2+ (0.001M)||Y^ 2+ (0.01M)|Y is _________ 10^ -2 V (Nearest...
- The resistivity of a 0.8 M solution of an electrolyte is 5 10^ -3 . Its molar conductivity is ____________ 10^4 ^ -1 cm^2mol^ -1...
- Which one of the following statements is correct for electrolysis of brine solution?
- The logarithm of equilibrium constant for the reaction Pd^ 2+ +4Cl^- PdCl_4^ 2- is ____________. (Nearest integer) Given :...
- Electrolysis of dilute aqueous NaCl solution was carried out by passing 10 milli ampere current. The time required to liberate...
- For the reduction of NO_3^- ion in an aqueous solution, E° is +0.96 V. Values of E° for some metal ions are given below V^ 2+...
- In an electrochemical cell, dichromate ions in aqueous acidic medium are reduced to Cr³⁺. The current (in amperes) that flows...
- EMF of a cell in terms of reduction potential of its left and right electrodes is
- If denotes reduction potential, then which is true ?
- What will be the emf for the given cell Pt ,|H_2(P_1)|H^+(aq)||H_2(P_2) ,| ,Pt
- Which of the following reaction is possible at anode?
- When the sample of copper with zinc impurity is to be purified by electrolysis, the appropriate electrodes are
- Several blocks of magnesium are fixed to the bottom of a ship to
- For a cell reaction involving a two-electron change, the standard e.m.f. of the cell is found to be 0.295 V at 25^ . The...
- Standard reduction electrode potentials of three metals A,B & C are respectively +0.5 V, −3.0 V & −1.2 V. The reducing powers of...
- When during electrolysis of a solution of AgNO_3 9650 coulombs of charge pass through the electroplating bath, the mass of silver...
- For the redox reaction Zn(s) + Cu^ 2+ (0.1M) Zn^ 2+ (1M) + Cu(s) taking place in a cell, E^0_ cell is 1.10 volt. E° for the cell...
- In hydrogen - oxygen fuel cell, combustion of hydrogen occurs to
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